Intelligent, rule-based portfolio strategies for investors
Contributor's Links: Logical Invest
Remove uncertainty about your investment strategy decisions and get superior returns with greater safety. Our quantitative portfolio strategies are delivered as a few simple ETF trades per year that you easily place in your own brokerage accounts. We offer easy-to-implement strategies for retail ...more


April Strategy Review
As we enter a seasonally sluggish period for equities it may be best to stay in the markets but use our hedged strategies to gain exposure to alternative assets.
Performance Update Newsletter For April 2023
Although March was marred by news of failing banks, the threat of regional bank runs, and predictions of hyperinflation, the numbers reveal a different story. Despite concerns, March was a month of significant investment growth in financial markets.
The Logical-Invest Newsletter For March 2023
After an excellent start in January 2023, February was a corrective month for most asset classes.
January 2023 Thoughts
As we head into 2023, most investors have a conscious (or unconscious) understanding that things have changed. We are not in the same market environment we have been investing in for the past 13 years.
Performance Update Newsletter For November 2022
November ended on a good note as the S&P 500 added 3% on Wednesday, closing the month at +5.4%. The 30-Year Treasury ETF (TLT) rose an impressive +6.7%. Gold was up 8.1%.
October Report - Navingating Through Uncharted Economic Waters
We are navigating through an unknown economic environment. Economists are trying to compare today's macro trends to those of the late 60’s, early 70’s. The truth is they don’t know the outcome, as today’s labor markets are different from the past.





Latest Posts
Update Of Our Asset Allocation Models
Update of our tactical asset allocation models, 10 of them added recently and are free for all our followers
Updated Overview Of Our Asset Allocation Models
With the launch of our new app we've been asked by several followers to provide an overview of the asset allocation models we currently publish. Several of them are free upon registration, so check it out!
Portfolio Builder: How To Create A Portfolio Of Portfolios
We’ve received a couple of reader questions in the last few weeks asking whether it is possible to create a “Portfolio of Portfolios” in our Portfolio Builder.
Logical Invest 2.0: Strategy & Launch Of New Application
Logical Invest launches new web application

Work Experience

Founder & Partner
January 2013 - Present (10 years 6 months) develops intelligent rule based portfolio investment strategies. These strategies are offered on a subscription basis to the public through
Colour-Science AG
June 2002 - Present (21 years 3 months)
- Development of the i2e (intelligent image enhancement) technology - Red eye removal - Image noise removal - Image processing - Quality monitoring software - ICC profiling


Eidgenössische Technische Hochschule Zürich
1988 / 1989
Master of Business Administration
Ecole polytechnique fédérale de Lausanne
1983 / 1988
Microtechnics, Robotics


The Logical-Invest Rotation Strategy Blog
Frank Grossman
Logical Invest started out as a place to join Frank Grossmann’s popular Global Growth Strategies and now has grown to include a team of researchers, strategy developers and successful investors. We share a passion for logical, rules based investing and a willingness to share our learning with others.